Giancarlo Trombetti
Director
Manuela Guidi
Director
Frank Zappa
Self (archive footage)
Matt Groening
Self (archive footage)
Ruth Underwood
Self (archive footage)
Phillip Glasser
Self
Riccardo Bertoncelli
Self
Warren Cuccurullo
Self
Dweezil Zappa
Self
Ahmet Zappa
Self
Fabio Treves
Self
Massimo Bassoli
Self
Roberto Gatti
Self
Terry Bozzio
Self
Claudio Trotta
Self
Don Preston
Self
Bunk Gardner
Self
Jimmy Carl Black
Self